Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c4abbdf107d7054f91647b3851ca1563dc2529966a02ebc5e84430b4f8202f6' 
  AND token = 'beWjDna4NfV0dquF+uT9qRwUC4uheOFEWacFWCCZDUg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}